393146 divided by 78 
Our goal is to divide 393146 by 78.

Step 1:
The number 78 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 78

On to step 2:
78 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 78

On to step 3:
78 goes into 393 5 times with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 390 from 393 to get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 78

Advancing to step 4:
31 divided by 78 is 0 with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 50.0
If we take 0 away from 31, we end up with 31.
Grab the next digit (4) from the dividend, add it to 31, then carry on: 314 / 78

Going ahead to step 5:
78 goes into 314 4 times with a remainder of 2.
The next digit of our result is 4. 
Result so far: 504.0
If we take 312 away from 314, we end up with 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 78

Going ahead to step 6:
The number 78 fits into 26 0 times, leaving a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 5040.0
Deduct 0 from 26 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 7:
78 goes into 260 3 times with a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 5040.3
If we take 234 away from 260, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 8:
78 goes into 260 3 times with a remainder of 26.
Write down 3 as next digit of the result. 
Result so far: 5040.33
Subtracting 234 from 260 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

In conclusion, the division gives 5040.33 with a balance of 0.026.